PTC heating core is a new kind heater in the market.

It is fixed by a pair of metal electrodes with leads on both sides of PTC elements. 

Additionally，by covering insulated film on the metal electrodes，

the surface-insulated heating core is finished. 

The simple-structure heater gives our constant-temperature heat 

and does not need any additional temperature applications. 

The high insulation-intension heater has many advantage 

such as security，giving outheat continuously and keeping steady power ，

being used in a large range of voltage and so on.

PTC heating elements have been widely used for hair permanent clamp，

hair curler, face sauna , heat preservation plate，electric mosquito killer，

physical therapy apparatus，hot melt glue gun and other automatic heat preservation devices.